| abstract |
Transparent, multilayer, biaxially oriented polyester films having a) a base layer B composed of at least 50% by weight of a thermoplastic polyester and from 0 to 30% by weight of a cycloolefin copolymer and b) an outer layer composed of from 20 to 100% by weight of a cycloolefin copolymer, the glass transition temperature of the cycloolefin copolymers being less than 120° C., possess very good water vapor barrier properties and effective adhesion between the layers. These films are especially suitable for packaging foods and other consumables. |